Light filter



Jim. 20, 925 1,523,734 D. H. TUCK LIGHT FILTER Filed June 26. 1922 J llllllllll nnllllllll/l n @Hl I 1 M, 5 MW 0 W T q' 5 By "WI/ Aliomey Patented Jan. 20, 1925.

UNITED 1 starts PATEl-T @FFIQE.

DAVIS HENRY TUCK, 0F LEONIA-, NEVT JERSEY, ASSIGNCBR I0 HQLOPHANE GLASS CO. INC OF NEW)" YORK, N. Y.,

A oonronk'rron ornnw JERSEY.

LIGHT FILTER;

Application filed June 28,1922.

To (ZZZ whom it may concern.

Be it known that I, DAVIS HENRY TUoK, a citizen of the United States, and a resident of Leonia, in the county of Bergen and State of New Jersey, have invented certain new and useful Improvements in Light Filters, of which the following is a specification.

The object of this invention is to construct a light filter for use in connection with shades or reflectors of light to produce colored light by absorption by means of a screen formed of a flexible piece of colored material lying freely between wire strands in such manner as to preserve the screen from deterioration or destruction resulting from the heat from the adjacent light source which may expand or wrinkle the flexible material, and at the same time rendering it readily removable and interchangeable. In this manner the life of the filter is prolonged as the flexible material may readily shift to a new position between the wire strands.

Fig. 1 is a rear elevation of the color filter showing the method of retention of the transparency in the fram Fig. 2 is a vertical cross section of that portion of the filter shown on line 22 of Fig. l.

Fig. 3 is a vertical cross section of thatportion of the filter shown on line 33 of Fi 1.

Fig. 4 is a vertical cross section of that portion of the filter shown on line H of Fi 1.

Fig. 5 is a front elevation of a portion of the filter.

In the figures, 1 is a metal ring having a plurality of spring hooks riveted to it for the purpose of gripping the open mouth of reflector 12. These hooks are fastened to the ring by means of rivets 11 and are preferably of two kinds. One, shown at 2, is S- shaped, as at 9 and then bent over at 10 to fasten around the frame. The other kind. as shown at 3 and 4;, has a simple upper part similarly bent at 10 to fasten on the frame by means of rivets 11. The spring hooks are thus arranged to form a hinge and latch combination.

The face of the ring is also provided with a plurality of projections 4 pressed into it in the form of spurs. A piece of fine wire is wound and fastened around one of the spring hooks 3 forming a twist or loop at 13 and extended over the nearest spur from Serial No. 570.875.

whence it passes across the face of the ring and over the other spurs so as to form a star of wire 8 forming a frame upon which a flexible light transmitting screen 6 is placed; the wire is then continued across the top of the disk and ring as shown at 7 over the spurs in star form finally passing around the hooks 3 and 4 so that the end of the wire can be joined with the loop 13 at the beginning.

The above explains the method by which the screen is fastened in the frame. The filter is adjusted to the reflector by catching the lower rim of the reflector with hooks 3 and 4; and then springing hook 2 into posi tion. As the sides of the ring are curved upwardly, the ring fastens firmly on the mouth of the reflector. The number of hooks and their formation can, of course, be varied at will and the manner of fastening the wire or cord across the upper and lower face of the ring can be changed without departing from the spirit of the invention.

The advantage claimed for this construction is the ease by which the screens can be replaced and the simplicity of attachment to the reflector itself. It should be noted that the screen lies loosely between the wire mesh and differences in degrees of heat caus- 7 ing the screen to expand or contract, curl or change its configuration will not materially affect its usefulness because there is adequate allowance for the free play of the screen between the wire. lVhere such screens have been used heretofore they have been securely fastened to the rims and when subjected to the great heat from modern light sources they broke away from the frame, curled and formed holes which rendered them useless in a comparatively short space of time. A set of various colored screens can be sold with each attachment so that various light effects can be obtained. The wires are generally so fine that they do not cause an appreciable shadow. WVhile the frame and screens have been shown in disk form they can of course be of any shape depending on the form of envelope used in connection with the light source.

I claim:

In a light filter, a frame adapted to be disposed in front of a light source and having an opening through which light is to be passed and a plurality of wire receiving spurs disposed about said opening, sets of IOU strands interlaced between the spurs, and a thescreen may freely lIlOVG when affected by light transmitting screen made of a sheet of the heat of the adjacent light source.

flexible material whose configuration is af- Signed at New York city, in the county of 10 Eeeted by an adjacent light source, said New York and State 01 New York, this 22nd screen being interposed between the sets of day Of June 1922.

strands and loosely held thereby in the open ing with its edges free of the frame whereby DAVIS HENRY TUCK. [n 5.] 

